From the website:

Here is a fairly straight-forward pattern for a sock for an iPod nano. So that the “hold” switch is accessable with the sock on, there is a hole in the bottom for the earbud cord. I find this easiest using Magic Loop, but it can of course be done on DPNs as well.

Techniques:

• Turkish cast-on
• reverse loop cast-on
• knit stitch
• purl stitch
• cast-off
• Magic Loop.